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View Full Version : @ 2400 FALLING ON ITS FACE???



liloldchevyvan
07-10-2008, 06:49 PM
HEY GUYS, TONS OF HELP ON HERE, BUT I CANT RESOLVE MY ISSUE.

GOT AN 05, NO MODS XB12. ALWAYS RUN 93, AND KEEP REGULAR SERVICE. COMING UP ON 18K.
FIRES AND RUNS, IDLE IS NORMAL, AND ALL RIDING ABOVE 2800 IS SMOOTH. IF I RIDE BELOW 2500, CRUISING THOUGH TOWN, IT BUCKS AND KICKS. IF I HOLD IT AT ABOUT 2400, IT RUNS LILKE A HIT & MISS MOTOR FROM 1910 AND SENDS ME INTO THE AIRBOX. ALMOST AS IF CUTTING OFF/MAJOR MISFIRE?? NO C.E.L.? IT DOESNT MATTER WHAT GEAR IM IN. FROM COLD START OR WHEN HOT. I HAVE LET IT SIT AND HEAT UP IN DRIVE, AND STILL SAME ISSUE. ANY HELP....THANKS! MICHAEL

mrdozer2you
07-10-2008, 07:12 PM
Breather re-route

Lefox add link please [cool]



Or tell me how to do it[smirk]

liloldchevyvan
07-10-2008, 07:16 PM
IM GAME JUST GIVE ME A DIRECTION, NO LADIES ON A BAD BIKE.

LeFox
07-10-2008, 07:59 PM
damn i feel like a slave :o

link: diy breather re-route (http://www.buellxb.com/Buell-XB-Forum/Do-It-Yourself-Buell-Mods/Re-route-hoses)

also, i would suggest getting you AF ratio checked ;)

LeFox
07-10-2008, 08:01 PM
oh yea, michael...press caps lock, please.

writing like that on the net means that you are shouting and is also not pleasent to read ;)

liloldchevyvan
07-10-2008, 08:03 PM
my bad, im a service writer for gm, 10 years...habit. thanks lefox...you save everyones a$$ on here it seems.

LeFox
07-10-2008, 08:25 PM
thanks lefox...you save everyones a$$ on here it seems.
nah, just dozer's :p

liloldchevyvan
07-10-2008, 08:32 PM
quick question then...cutting holes and opening up airbox...good or bad idea??? going by local parts store after work to get mod stuff.

oh, and bumped into a guy who wired his exhaust valve open...is that stupid also???

plans on my bike are race ecm and drummer in two months.

liloldchevyvan
07-10-2008, 08:33 PM
exhaust and ecm installed after i take it in for my 20k service to harley.

LeFox
07-11-2008, 07:58 AM
quick question then...cutting holes and opening up airbox...good or bad idea???
get a k&n airfilter if you're going to cut open the airbox, but wait till you have a race ecm or remapped your current one.

more air needs more fuel!

oh, and bumped into a guy who wired his exhaust valve open...is that stupid also???
he just killed his low-end power.
the valve is there to create more backpressure at low rpm's.

mrdozer2you
07-11-2008, 11:34 AM
nah, just dozer's

I know my place ;)

liloldchevyvan
07-11-2008, 12:11 PM
right on, he seemed a bit off anyways. performed the mod, rained all night here in SC. will run tonight and let you know. thanks!!

liloldchevyvan
07-12-2008, 11:35 AM
[confused]ok, mod performed...headed down the street last night. all ok at first. after about 5 blocks, right back to bucking and kicking? i noticed that the engine almost goes silent, then springs back to life. but its only silent for a half a second at most????? hard accel all is ok. accel normally, from 2100-2400 its like a mechanical bull....fun stuff!!! any other ideas lefox?

mrdozer2you
07-12-2008, 11:59 AM
Everytime you do a mod the ECM needs to re-learn. If it was a short ride there probably wasnt enough time for the ECM to recalibrate itself [up], not to mention get to the proper operating temperature. If you can, jump on the expressway/highway for a good 15 minutes or so at a constant speed ( this works the best for me ). The ECM is supposed to go into "closed loop" after riding 10min or so under 3k RPM, almost impossible to do in my book, so the expressway works fine for me ;)

06xb9r
07-12-2008, 01:42 PM
Sounds like this could be a wire pinched or rubbed through somewhere, maybe?

liloldchevyvan
07-12-2008, 02:02 PM
ok, heading out to hwy 31 now. i will let you know.

FIDOSOL
07-12-2008, 02:02 PM
hmm 31W ?

liloldchevyvan
07-15-2008, 01:38 PM
ok, you guys rock, running great. back to its old self, with just the normal hiccups. out of town for an autocross event all weekend in charleston, rode last nigh and all is swell. thanks!!!! Mike Jones

liloldchevyvan
07-15-2008, 01:41 PM
yup hwy 31, live in north myrtle beach, and 31 has no stoplights, great place to re-learn ECM. where are you FIDOSOL???

FIDOSOL
07-15-2008, 08:20 PM
I'm on the other 31 that I know, in Kentucky. But I've been on the 31 you're talking about, I spent some years in South Carolina :p